LAMOST [1]}, [2]}, [3]}, [4]}, [5]} is a northern spectroscopic survey situated at Xinglong Observatory, China. LAMOST is able to observe 4,000 objects simultaneously with a 20 \( {\rm deg}^2\)  FoV. The main two of the scientific projects of LAMOST are aiming to understand the structure of the Milky Way [6]} and external galaxies. We use the A-, F-, G-, K- catalogs in LAMOST Data Release 7 (DR7) Low Resolution Spectra (LRS) and Medium Resolution Spectra (MRS) http://dr7.lamost.org/catalogue.
